Choke attachment for guns.



(No Model.)

Patented Dec. ld, 190|.

n. P. cuv. CHDKE ATTACHMENT FOR GUNS.

- o ATES' Far-ENT herren.

' RANDOLPH r. conv, or S'r. LOUIS, MISSOURI, ASSIGNOR or FoRTY-NINE .ONE-HUNDREDTHS 'ro JULES BARON, or Sr. LOUIS, MISSOURI.

@coassistent-*smear ros; nous:

SPEGIFIOATION forming part of Letters Patent No. 688,389, dated neemter 1o, 1901.

Application ma Aprn 15,1901. seen No. 55,892. (No man.) f

.To all whom it may concern:

Beit known that I, RANDOLPH P. CORY, a subject of the King of Great Britain andIreland, residing in the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Attachments for Guns, of which the following isa full, clear, and exact description, reference being had to the accompanying drawings, forming part of' this specification.

The object of my invention is to provide an attachment for gun-barrels that can be quickly and easily vchanged from an open to a choke bore and which can be readily replaced by another like attachment, the construction being such that the change can be made from an open to either a partial Or full choke.

With this object in view my invention consists. in features ofv novelty hereinafter fully described, and pointed out in the claims.

Figure I is a perspective view showing part ci a gun-barrel with my attachment applied. Fig. II is a longitudinal section taken on the i line II II, Fig. I, showing the attachment in its choked position. Fig. III is a like view showing the attachment in its open position.

. FigIV is a transverse section taken on line I rv iv, Fig. i..

Referring to the drawings, l represents the muzzle end of a gun-barrel. Secured tothe end of the barrel is a sleeve 2, that tits over the barrel `and is held thereto by any suit-- able means. I have shown it held to the barrel by being clamped thereto through means of ears 3 on the sleeve, through which passes a set-screw 4.,.the inner end of the sleeve being formed with a slot 5 between the ears, so as to permit the inner end of the sleeve to be drawn tightly around the barrel by adjusting the screw 4. The outer; portion of the sleeve is formed with slits 6, that preferably extend back 'about two-thirds the distance of the length of the sleeve, as shown inthe drawbeyond the end of the barrel to assume a smaller diameter than the bore of'th-e barrel,

thereby forming the choke to the gun. The

slits 6 are preferably tapering, being largest `sleeve tapers slightly, being smallest at its outer end. When the ringis moved back to the position shownin Fig. lll, the outer end ot the sleeve springs open, so that its interior diameter is larger than the bore of' the gun, and thus the choke is entirely removed. By moving the ring partl Wayback a partial choke is provided, so that the gun'can be shot either with an open barrel, a full choke, ora partial choke.

The ring 8 can either be moved by grasping it in the hand, or, if preferable, a push-bar 9 (shown by dotted lines in Fig. Ill) may be employed, this bar extending back to or near 'the breech. of the gun, where its inner end would be supported by any suitable/means. l

I am aware that it has been proposed to slit the'outer end of the muzzle of a gun-barrel and provide the same with a Slip-ring, so that the outer end of the barrel may be contracted to produce a choke; but my invention is differentiated from such aconstruction in that it does not form an integral part of the barrel, and vwhen the gun is being shot with an open 'bore the slits 6 are not liable to become filled with lead, as this portion of the sleeve is at such times larger than the bore of the gun. Moreover, the sleeve can be readily applied to any gun in use and can be as readily removed and replaced by another when the- -end of the sleeve, substantially as set forth.

2. An attachment for gun-barrels consisting of a sleeve having tapering slits lnits outer portion and provided with means for attachment to a gun-barrel, and a .Slip-ring fitting over the sleeve, substantially as and for the purpose set forth.

3. An attachment for gun-barrels consisting of a sleeve having its outer portion formed with tapering slits and which is adapted to ing;r of a sleeve having slits formed in its be attached to a gunbarrel, and means for outer portion, and having a shoulder adapted contracting the outer end ofthe sleeve, subto fit against thecnd of the barrel, means stantially as set forth. for secining the sleeve to the barrel, and a i5 5 4. An attachment for gnn-bairels consistslip-ring fitting over the sleeve, substantially ing of a sleeve having; slits formed' in its as and for the purpose set forth.

outer portion and provided at its inner end r with a clamp for attaching it to the barrel, RANDOLPH P' CURL and a slip-ring fitting over the sleeve, snb- In presence of-.

Io stantially as set foi-lh. I E. S. KNIGHT,"

5. An attachment for gnu-barrels consist- 1 M. P. SMITH. 

